walkee



NITED STATES tries.

PATEN ALBERT Irl. VALKER, OF BROOKLYN,

MANUFACTURING COMPANY, OF NEW YORK, Y.

MEANS FOR UNITING WOOD.

SPECIFICATION forming part of Letters Patent N0.300,536, dated June 17,1884.

Application filed January 26, 188,4. (No model.)

To all wil/0m, t may concern.-

Beit known that I, ALBERT H. VALKER, of Brooklyn, in Kings county, andState'of New York, have invented a certain new and useful Improvement inMeans for Mending or Uniting Pieces of lVood, of which the following isa specification. The improvement consists in a strip of metal which isserrated at one edge, or which ro is corrugated or bent into sinuousform and adapted to be driven into adjacent portions of an end of twopieces of wood placed edge to edge, so as to secure said pieces of woodtogether. i 5 In the accompanying drawings, Figure l is a side view of adevice/ suitable for use in carrying out my improvement, and showing itas uniting two pieces of wood. Fig. 2 is a similar view representing astrip of modified form. Fig. 3 is a similar View representing a strip ofstill another modided form. Fig. 4 is a similar view representing astripof still another modified form. Fig. 5 is aview illustrating how twostrips of the kind shown in Fig. 4 can be cut without waste. Fig. 6 isan edge view of a strip of the kind shown in the preceding gures. Fig. 7is a side view ot a strip corrugated or bent, and showing two pieces ofwood joined by it. Fig. 8 is an edge view of the strip shown in Fig. 7,and an end view of the pieces of wood joined by it.

Similar letters of reference designate corresponding parts in all theiigures.

In Fig. l, A designates a dat strip of metal having one longitudinaledge, a, straight,and the other longitudinal edge, b, out so as to havea curved outline. By thus curving the edge b, I provide it with aserration or with teeth c. B O designate two pieces of wood placed edgeto edge and united while held in this relation to each other in a clampor otherwise by driving the strip A into adjacent portions of an end, asadditionally illustrated in Fig. 6. Another strip may similarly unitethe pieces at the opposite end, if desirable. The serrations of thestrips or their teeth secure the strips against being pulled outlengthwise by a strain on the pieces of wood joined by them. The stripswill secure the pieces of 5o wood joined by them against being separatedthrough any ordinary force, and they stay and brace the pieces of woodagainst independent movement sidewisc.

In Fig. 2 the strip A is shown as cut so as to produce three curves inthe edge b, and 5 5 consequently four teeth, c. In Fig. 3the edge b ofthe strip A is cut at such angles as to have a large number of abruptteeth, c. In Fig. 4 the edge b of the strip A is cut so as to form anumber of abrupt teeth, c, of a shape 6o somewhat different from that ofthe teeth c shown in Fig. 8. Two strips, A, of the kind vshown in Fig.4, may be cut together without waste of metal, as illustrated in Fig. 5.The strip A shown in Fig. 7 has its edge b 65 shaped like the edge b ofthe strip shown in Fig. 2; but it is corrugated or bent into sinuousforni, as illustrated more particularly in Fig. 8. Any of the stripsshown in Figs. 1, 3, and 4. may be corrugated in the same way, if de- 7osirable. Then a strip is corrugated, it is not absolutely necessary thatit should have a serrated edge, providing it can, without such an edge,be driven into the pieces of wood. which it is to join. v 75 To applyeach referred-to kind of strip, the two pieces of wood to be united areheld edge to edge in a clamp or otherwise, and the strip is driven intothe adjacent portion of their ends, so as to extend across the meetingedge. 8o The pieces of wood will then be held very securely together.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. A strip of metal which is serrated at one 8 5 edge, or which iscorrugated or bent into sinuous form, and adapted to be driven in thedireetion of the length of its corrugations or bends into adjacentportions of two pieces of wood placed close together, so as to secure gosaid pieces of wood together, substantially as specified.

2. The combination,with two pieces of wood placed close together, of astrip of metal which is serrated, or which is corrugated or 95 bentlongitudinally into sinuous form, and driven edgewise into adjacentportions of the two pieces of wood, substantially as specified.

ALBERT H. VVALKEB.

Witnesses:

T. J. KEANE, WILLIAM G. Lrrsnv.

